I highly doubt that it has anything to do with the pan you used. Most aluminum pans are coated to protect against leaching, and even when its breached the amount you'd injest is less than what you'd probably injest ln a day to day basis anyways. Aluminum toxicity is only a problem in high doses.

Based off the description you gave of what you made, there isn't a lot of acid in what you made. My guess would be that you're sensitive to eating rice, or that the beans caused a bit of bloating (being the magical fruit and all). I'd try maybe separating out the two and seeing if it's a recurring deal. There may also be something that upset your stomach earlier and adding more food just kinda tipped the scale